wow I can't find any Lexus' here for under $10k, maybe a 1991 or 1992 model for $6-8k but Floridians are outrageous.
I go with "build yourself a car" many options there!
Which do you like better? FWD, AWD or RWD? Figure that out then go from there
If I had $10k to put into MY car, I'd be the happiest person on earth, hehe
Get a 240SX and SR20 it. Get a Supra (believe it or not, the older you go the cheaper the insurance, even on a Supra), buy one w/ a blown engine and get a turbo for it. I have a lot of connections if you'd like to go that route.
Personally, I think it's no fun to just buy a car that's already fast. I like to build stuff and being the underdog makes it all that much better for me